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Get the monthly weather forecast for Washington, DC, including daily high/low, historical averages, to help you plan ahead.
Weather.com brings you the most accurate monthly weather forecast for Washington, DC with average/record and high/low temperatures, precipitation and more.
Weather reports from January 2021 in Washington DC, USA with highs and lows.
The lowest daily average low temperature is 29°F on January 30. For reference, on July 20, the hottest day of the year, temperatures in Washington, D.C. typically range from 72°F to 88°F, while on January 30, the coldest day of the year, they range from 29°F to 43°F. Average High and Low Temperature in January in Washington, D.C. Winter. Link.
The temperatures take a cyclical pattern, starting from a high of 40.6°F (4.8°C) in January and peaking to a balmy 88°F (31.1°C) in July. The lowest temperature, 27.5°F (-2.5°C), is recorded in January, while the highest, 69.1°F (20.6°C), occurs in July.
Avg Low Temps 20 to 30 °F. Explore comprehensive January 2026 weather forecasts for Washington, D.C., including daily high and low temperatures, precipitation risks, and monthly temperature trends.
21 hours ago · Scattered showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 51. South wind around 6 mph. Chance of precipitation is 60%.
